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Fwd: DO and threads [SOLUTION]
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Fwd: DO and threads [SOLUTION]


  • Subject: Fwd: DO and threads [SOLUTION]
  • From: Martin Tauber <email@hidden>
  • Date: Fri, 4 Nov 2005 20:42:06 +0100

Thanx Wade, this solved the problem.

Anfang der weitergeleiteten E-Mail:

Von: email@hidden
Datum: 4. November 2005 03:11:18 MEZ
An: Martin Tauber <email@hidden>
Cc: email@hidden
Betreff: Re: DO and threads

2005-11-03 20:28:22.606 cheese[455] _preInitWithCoder:signature:valid:wireSignature:target:selector: argCount: incompatible method params: got NSMethodSignature: types=v@:I nargs=3 sizeOfParams=160 returnValueLength=0; want NSMethodSignature: types=Vv@:I nargs=3 sizeOfParams=160 returnValueLength=0;

Well, as you can see, the method signature you're looking for [on the client side] has types=v@:I, while the one the server's got implemented has types=Vv@:I. You can check out <http://developer.apple.com/documentation/Cocoa/Conceptual/ObjectiveC/ RuntimeOverview/chapter_5_section_6.html> for info on Type Encodings.


In short, the capital V stands for oneway. That you don't have it in your caller indicates your caller isn't getting the method definition right... you have specified oneway in the class interface, right, not just the implementation?

[As an aside, since you can only have oneway void methods, isn't the trailing little-v redundant?]

Wade Tregaskis

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